{"nhtsa_id":10154968,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-03-25","date":"2019-02-05","document_id":"T2084A","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"This Temporary Repair Practice authorizes certified repair locations to upfit certain ISB and ISL CM2350 engines with an improved Selective Catalytic Reduction (SCR) Catalyst. MY2013 thru MY2014 engines that qualify, a new wiring harness and calibration update is required. The engine must show open for this field action, experience a complaint or symptom in which troubleshooting results in the replacement of the SCR, and the SCR part number must match the Affected Part Number list. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154968-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10154968-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10154968","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISB","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISL","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}